Probably applies to all children, not just those with specific genetic attributes.
I think what's missing isn't so much simply mentorship - it's advocacy. The children suffering the most domestic instability are those least likely to get a parent helping them or helping their school to help them.
My (widowed, middle-class, white) mother volunteered for https://en.wikipedia.org/wiki/Sure_Start and as an assistant in schools.
She guided immigrant families coming to the country through the hurdles and stories of upset "native" children being upset as Daddy's come home [from prison] and isn't being nice to Mummy.
My takeaway feeling from hearing the stories (aside from pride) is that I, and I presume most of us here, were so so lucky. We got a pretty decent launch into the world and made of it what we wanted - we've got complaints, but mainly through our own actions.